Jacksonville Jaguars left tackle Cam Robinson suffered a non-contact right knee injury during practice on Thursday, according to Michael DiRocco of ESPN.com.

Robinson missed almost all of last season due to a torn ACL in his left knee.

With backup left tackle Cedric Ogbuehi also out with a hamstring injury, the Jaguars will be down to third-string lineman Will Richardson for their season opener against the Kansas City Chiefs on Sunday.

Jacksonville head coach Doug Marrone said that Robinson's knee “gave out” when he was setting up in pass protection, adding that Robinson underwent an MRI but that he doesn't yet know the results:

“You know what I've learned around here? I just take things day by day and the guys that can play, play, and the guys that can't, they just tell me,” Marrone said. “What else am I going to do? I'm not a doctor. Can't predict anything. I have no clue whatsoever.”

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Marrone also said that he does not know if the Jags will sign another tackle.

For a Jaguars team that saw injuries ravage its offensive line a year ago, which played a rather large role in their 5-11 finish, this is obviously horrendous news moving forward.

Robinson, who played his collegiate football at the University of Alabama, was originally selected by Jacksonville in the second round (34th pick overall) of the 2017 NFL Draft.

He made 15 starts during his rookie campaign and was very impressive as the Jags won 10 games, captured the AFC South division crown and made it all the way to the AFC Championship Game.